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[Alan Pevec <1393362@xxxxxxxxxxxxxxxxxx>]

** Also affects: neutron/juno
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1393362

Title:
  linuxbridge agent is using too much memory

Status in OpenStack Neutron (virtual network service):
  Fix Committed
Status in neutron juno series:
  New

Bug description:
  When vxlan is configured:

  $ ps aux | grep linuxbridge
  vagrant  21051  3.2 28.9 504764 433644 pts/3   S+   09:08   0:02 python /usr/local/bin/neutron-linuxbridge-agent --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf.ini

  
  A list with over 16 million numbers is created here:

   for segmentation_id in range(1, constants.MAX_VXLAN_VNI + 1):

  https://github.com/openstack/neutron/blob/b5859998bc662569fee4b34fa079b4c37744de2c/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py#L526

  and does not seem to be garbage collected for some reason.

  Using xrange instead:

  $ ps -aux | grep linuxb
  vagrant   7397  0.1  0.9 106412 33236 pts/10   S+   09:19   0:05 python /usr/local/bin/neutron-linuxbridge-agent --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf.ini

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